The influence of variety on the content of bioactive compounds in beetroot (Beta vulgaris L.)

Abstract

Vegetable are widespread throughout the world and is a major part of the human diet. From the perspective of agricultural crops that belong to the group of Beta vulgaris (beetroot, mangold, sugar beets, fodder beet) are first-rate vegetables. Especially popular is used in the food industry for the production of sugar, various vegetable juices, coloring agents, and many other products. Beetroot (Beta vulgaris L.) is considered one of the ten most important vegetable in the world, thanks to the content of rare natural pigments (betalains), polyphenols, flavonoids, antioxidants, vitamins, minerals and fiber. In this work we evaluated content of bioactive substances, especially the content of total polyphenols, anthocyanins and antioxidant activity in several varieties (Cylindra, Kahira, Chioggia, Crosby Egyptian) of beetroot (Beta vulgaris L.). Samples of plant material were collected at full maturity stages from areas of Zeleneč (Czech Republic). Zeleneč is area without negative influences and emission sources. Samples of fresh beetroot (Beta vulgaris L.) were homogenized and were prepared as an extract: 50 g cut beetroot (Beta vulgaris L.) extracted by 100 mL 80% ethanol for sixteen hours. These extracts were used for analyses. The content of the total polyphenols was determined by using the Folin-Ciocalteu reagent (FCR). The absorbance was measured at 765 nm of wavelength against blank. The content of total anthocyanins was measured at 520 nm wavelength of the blank. Antioxidant activity was measured using a compound DPPH˙ (2.2-diphenyl-1-picrylhydrazyl) at 515.6 nm in the spectrophotometer. In the present experiment it was detected, that total polyphenols content in samples ranges from 218.00 mg.kg -1 to 887.75 mg.kg -1 , total anthocyanins content in samples ranges from 14.48 ±0.40 mg.kg -1 to 84.50 ±4.71 mg.kg -1 and values of antioxidant activity were in interval from 8.37 ±0.29% to 21.83 ±0.35%.

Bioactive Compounds and Total Sugar Contents of Different Open-Pollinated Beetroot Genotypes Grown Organically

“…Furthermore, Ninfali and Angelino (2013) reported total phenols of 1.77 mg GAE g −1 DW (equivalent to 177 mg GAE 100 g −1 DW) [ 58 ], which was lower than the values found in the current study. Kovarovič et al (2017) investigated the total phenolic compounds of four beetroot varieties in the Czech Republic and noted the range of 368.75 ± 5.14 mg kg −1 (equivalent to 36.87 mg 100 g −1 DW) to 887.75 ± 7.73 mg kg −1 (equivalent to 88.77 mg 100 g −1 DW) belonging to the variety Chioggia (white-colored with red strips) and Cylindra, respectively [ 59 ]. Kavalcova’ et al (2015) stated a total polyphenols’ range of 820.10 mg kg −1 to 1280.56 mg kg −1 (equivalent to 82.01–128.05 mg 100 g −1 DW) [ 60 ].…”

Physicochemical and Bioactive Compounds in Carrot and Beetroot Juice

“…The data in Figure 2f represents anthocyanins content (790 mg/l) of beetroot juice which is in accordance with the previous findings of Manea (2013) who analyzed bioactive compounds in beetroot juice during preservation by refrigeration and found that fresh beetroot juice contained 0.54 g/L anthocyanins content. Kovarovic et al (2017) reported varied content of anthocyanin (14.48 to 84.50 mg/kg) in five varieties of beetroot.…”

Modulation the Neuro-toxicity Induced by Aluminum Chloride in Rats Using Beetroots and Broccli Extracts

“…The blood-brain barrier has an active efflux through a monocarboxylate transporter in order to avoid aluminum deposition in the brain. However, this system can be affected by increasing the concentration of aluminum in the blood Reduction in serum aluminum concentration in treated group could be as a result of beetroot or broccoli extract interaction with the aluminum possibly by chelation to cause its elimination from the blood [29].…”